Parallel routes not working inside dynamic page, when in same segment #84813
Description
Link to the code that reproduces this issue
https://github.com/FacundoSpira/parallel-routes-error
To Reproduce
I have the following file structure:
app/
├─ groups/
│ ├─ [id]/
│ │ ├─ new/
│ │ │ ├─ page.tsx
│ │ ├─ page.tsx
├─ @modal/
│ ├─ (.)groups/
│ │ ├─ [id]/
│ │ │ ├─ new/
│ │ │ │ ├─ page.tsx
│ ├─ default.tsx
├─ page.tsx
In both the / and groups/[id] routes I have Links to groups/123/new. When clicking it from the / page, it correctly opens the parallel route, but when clicking it from the groups/123 page, it's redirecting to the actual page, and not the parallel route. This only happens when the route is inside a dynamic group ([id]).
Current vs. Expected behavior
Expected: both links should open the parallel route.
Additional note: this started happening after upgrading from the 15.6.0-canary.53 version. The reproduction example has two branches:
main: using next version 16.0.0-canary.315.6.0-canary.53: using 15.6.0-canary.53. Parallel routes work fine here in both cases
16.0.0-canary.3
Screen.Recording.2025-10-13.at.12.09.36.AM.mov
15.6.0-canary.53
Screen.Recording.2025-10-13.at.12.12.24.AM.mov
Provide environment information
Operating System:
Platform: darwin
Arch: arm64
Version: Darwin Kernel Version 25.0.0: Wed Sep 17 21:41:39 PDT 2025; root:xnu-12377.1.9~141/RELEASE_ARM64_T8103
Available memory (MB): 16384
Available CPU cores: 8
Binaries:
Node: 20.12.2
npm: 10.5.0
Yarn: 1.22.22
pnpm: N/A
Relevant Packages:
next: 16.0.0-canary.3 // Latest available version is detected (16.0.0-canary.3).
eslint-config-next: 16.0.0-canary.3
react: 19.1.0
react-dom: 19.1.0
typescript: 5.9.3
Next.js Config:
output: N/AWhich area(s) are affected? (Select all that apply)
Parallel & Intercepting Routes
Which stage(s) are affected? (Select all that apply)
next dev (local), next build (local), next start (local), Vercel (Deployed), Other (Deployed)
Additional context
No response